package com.xzy.service;

import java.util.List;

public interface LoginService {

	public String login(String username,String password);
	public String reg(int id, String username, String password, int age);
	public String update(int id, String username, String password, int age);
	public String delete(int id);
	public List<?> select();
	public String selectname(int id,String username);
}
